Bolting-machine



(No ModeL) 2 SheetsSh,eet 1.

T. W. GRAHAM.

BOLTING MAGHINE.- No. 390,224. Patented Oct. 2, 1888.

(No Model.) 2 Sheets-Sheet 2 T. W. GRAHAM.

BOLTING MACHINE.

No. 390,224. Patented Oct. 2, 1888.

PATENT THOMAS W. GRAHAM,

OF DUBUQUE, IOWA.

BOLTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 390,224, dated October 2, 1888. Application filed February 21, 1888. Serial No. 264,749. (No model.)

To all whom, it may concern.-

Be it known that I, THOMAS W. GRAHAM, a citizen of the United States, residing at Du buque, in the county of Dubuque and State of Iowa, haveinvented certain new and useful Improvements in Bolting-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in bolting-machines; and it consists in the construction and arrangement of parts, more fully hereinafter described and claimed.

The object of my invention is to provide a machinefor bolting fiourorotherfinely-ground material, which will be simple in its construction and operation, effective in its results, cheaply manufactured and operated, and so arranged that a perfect separation of the dif ferent grades is secured and the daily application of lubricant to its bearings can be dispensed with. I obtain this object by the machine and construction illustrated in the accompanying drawings, wherein like letters of reference indicate corresponding parts in the several views, and in which Figure 1 is a vertical sectional view of my machine, and Fig. 2 is a top plan view showing the top portion partly broken away.

In the drawings, A represents the outer casing, B the top, and B the base. The top B has an opening through which passes a feedspont, 0, leading from the supply-source, and a central opening through which passes the driving-shaft.

Situated within the casing A is an inverted conical-shaped cylinder, D, having a horizon tally-arranged top or disk, D, which has an opening, at, through which passes the feedspout O, and a central opening for the passage of the drivingshaft. The inclined sides or walls of cylinder D are formed of wire or cloth of fine texture, and are secured at their upper edges to the periphery of disk I) and at their lower edges near the bottom of the casing to a hoop or band, D", which is of sufficient size and weight to retain the sides in position,

' and is formed with beveled or inclined outer faces and a pendent extension secured to its inner side, which extends downward a short distance, for purposes hereinafter stated,

The cylinder D and its connections are retained in position and suspended in the casing A by rods a a, which are secured at their lower ends to the disk D, and have their upper ends passed through the top H, at which point they are provided with nuts a a, to admit of an adjustment of the cylinder D.

Rigidly secured to the driving-shaft in the center of the casing and inside of cylinder D is an inverted conical-shaped cylinder, E, conforming in shape to that of cylinder D, but of smallerdiameter, so as to form an annular narrow space between its outer face and the inner face of the cylinder D. The sides of cylinder E are preferably solid, and are secured at their upper edges to the periphery of a circular top or table, E, which is situated a short distance below disk D, and has a central opening for the passage of the driving-shaft, and at its lower edge to the upper edge of a cylindrical projection, F, ofa revolving table, F, near the bottom of the casing below the end of cylinder D.

Secured to the outer side of the cylinder E, in theannular space between the two cylinders, are strips or flaps of cloth or other flexible material, G, which extend vertically the entire length of the cylinder and are secured at one edge, the other edge being left free to ride on the inner surface of cylinder D. These strips or beaters G may be placed at such intervals as the nature of the work demands, but preferably as shown in Fig. 2, so that the free edges will be directly over the attached edge of the strip immediately in front. In stead of placing these strips G vertically they may be arranged in a spiral line, if desired; The width of the strips may also be varied, but they areat all times sufficient to come in contact with the outer cylinder when the machine is in motion.

The table F above referred to is made cireular and extends out to a point near the sides A, and is rigidly secured to the driving-shaft by having a collar, f, through which the shaft passes, secured to its upper side, inside of the cylindrical projection F. This collar is pro vided with a set-screw, f, which impinges against the shaftand retains the collar in place, as shown.

A series of vertical supporting'rods, H, are secured to table F near its outer edge, which c v M extends upward outside the cylinder D to a point above the band D, and has a circular platform or distributing-table, I, mounted thereon about midway their length, said platform surrounding the lower portions of the cylinders and extending beneath the band D", the pendant c of said band extending down even with the bottom of the table I. The outer edge of the table I is in alignment with the edge of table F. An L-shaped distributing table or platform, J, of circular form surrounds the cylinder D a short distance above and beyond the band D It is mounted on the upper ends of rods H, the horizontal portion of the same extending out, its edge being in alignmentwith the outer edge of the tables I and F.

A vertical cylinder or drum, K, is secured to theupper edge of the platform J, and extends up to a point a short distance below the center and in close proximity to the cylinder D, it being constructed of rigid material.

A series of inwardly-projecting shelves or ledges, L L L, are secured to the inside of the lower part of easing A. The ledges L and L have their under sides beveled, as shown, and extend, respectively, beneath the tables J and I. The lower ledge, L is extended beneath the table F, the bottoms of the tables being close to the ledges.

At suitable intervals inclined chutes or discharge-openings, such as at m m m, are made in the casing A directly above the ledges, which may be provided with suitable valves or cut-offs.

O is the driving shaft, constructed with a hollow center and a hardened toe, 0, at its lower end, which is placed in a step box or seat, P, secured to the base B, having an annular upwardly-extending flange, 17, with an inclined inner face. The upper end of shaftO is journaled in a bearing, R, which is secured to and extends through the top B, and has an annular upwardlyextending flange, 1-, with beveled inner face. The protruding end of shaft 0 is provided with a band-pulley, S, and has afunnel, T, secured on its end, which leads in to the hollow center A collar, U, surrounds the shaft below bearing R, it being secured to the upper side of table E and provided with an upwardly-projecting sleeve, 11, having its inner face beveled, and a set screw, it, for securing the same to the shaft. An outwardlyinelined opening, \V, is made in the shaft above the upper bearing, R, the portion of the shaft in the said bearing being plugged, as at 0, below which and inside the beveled sleeve u is formed in the shaft an inwardly-inclined opening, WV, which leads into the hollow center. An opening, W similar to opening WV, is made in the shaft inside the flangep of seat P, for purposes hereinafter stated.

The operation of my machine is as follows: The cylinder E and shaft 0 being set in motion revolve rapidly, and the flour or other material introduced into the machine and deposited on the top of table or top E is forced off in an even and regular manner over its edges by centrifugal force, and falls in the narrow space between the cylinders D and E and onto the bolting cloth or wire of the outer cylinder, through which the finer material immediately passes as the material gravitates toward the bottom. As the cylinder E revolves, the free edges ofthe flexible strips G are thrown out by centrifugal force against the inner face of the cylinder D, and assists in forcing the descending material through the meshes of the bolting cloth or wire in a gentle and regular manner. he finer material, being the first to pass through the boltingcloth, falls on the revolving table J, while the medium grade, passing farther down the bolting cloth, Wlll pass through the same below the cylinder or drum K, and is guided onto table I by the inclined ace of band D and the coarse material or tailings, which have fallen down by gravity to the bottom of the cylinder D, is thrown onto table F, the pendant e of bandD preventing any of this grade from mixing with the finer grade on the table above. shaft revolves, it carries with it the distributing-tables F, t, and J, on which the bolted material falls, and the material is forced by centrifugal force off from the tables and out of the spouts.

In lubricating the machine, oil is fed into the upper end of the shaft and runs out of opening W into bearing R, and, working through the same, is collected in the sleeve u and again conducted to the hollow center of the Shaft by opening W. It then descends to the lower opening, W", and enters the bearing P, where it is retained or stored by the flange thus lubricating all the bearings, the conical depressions in the bearings acting as reservoirs for the oil.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a bolting-machine, the combination, with a vertically arranged bolting cylinder and a rotating cylinder within the same, of revolving distributing-tables below the cylinders, and ledges below the tables, substantially as described.

2. In a bolting machine, the combination, with a vertically-arranged conical bolting-cylinder and a revolving cylinder within the same, having flexible beaters secured thereto, of a vertical drum surrounding the lower portion of the bolting cylinder, a series of distributing-tables below the cylinders, and a series of ledges below the tables, substantially as described.

3. In a bolting machine, the combination, with a vertically-arranged conical bolting-cylinder andarevolving cylinder within thesame,

As the of a revolving table below the cylinders, tables 4. In a holtingmachine, the combination, with a vertically-arranged conical bolting-cyh inder, a revolving table below the cylinder, and a vertical drum surrounding the lower portion of the cylinder mounted on said table, substantially as described.

5. In a bolting machine, the combination, with the outer frame, of a boltingcylinder having reticulated sides of smaller diameter at the bottom than at the top, and having an opening in its upper end or top and open at its lower end, a revolving cylinder of smaller diameter than said other cylinder having closed sides and ends, a seriesof flexible strips or heaters having one edge secured to said inner cylinder on its outer face and their other edges free to act as heaters and adapted to ride on the inner surface of the outer cylinders when the machine is in operation, a series of distributing-tables arranged below the cylinders, and a series of ledges below the tables, substantially as described.

6. In a holtingmachine, the combination, with the casing, of a conical-shaped bolting cylinder suspended vertically therein, having sides of boltingcloth, a band secured to its lower edge having a beveled outer face, a conical cylinder movably secured within said bolting-cylinder having solid ends and sides, aseries of flexible beaters arranged lengthwise of and between the sides of said cylinders, a series of distributing-tables secured to the inner cylinder and revolving with the same, and the central shaft, substantially as described.

7. In a bolting -machine, the combination, with the casing, of a conical-shaped boltingcylinder suspended therein, a conical-shaped cylinder within said cylinder, having aseries of flexible strips or heaters secured thereto on its outer side, a series of revolving distributing-tables below said cylinders, a series of ledges secured to the casing and extending below the tables, and the shaft, substantially as described.

8. In a bolting machine, the combination, with the top and the inner cylinder, of a h0llow shaft extending through the same, a collar having an inclined inner face secured to said cylinder and shaft, a bearing secured to the top above said collar, and a plug within the shaft above the collar, said shaft having oppositely inclined openings therein respectively above and below the said bearing, substantially as described.

9. In a bolting-machine, the combination, with inner cylinder, of the upright hollow shaft having openings W, W, and W therein, and a pulley on its outer end, a bearing, P, secured to the base, having a flange, p, bean ing R, having flange r, collar U, havingsleeve u, and the plug 0, substantially as described.

In testimony whereof Iaffix my signature in presence of two witnesses.

THOMAS \V. GRAHAM.

Witnesses:

F. S. MARSHALL, E. M. SANFORD. 

